Generic stored api file for react native expo project.

js-rn-expo-stored-api.js

import Storage from 'react-native-storage';
import { AsyncStorage } from 'react-native';
var EventEmitter = require('events').EventEmitter;
EventEmitter.defaultMaxListeners = 40;
import { Segment } from 'expo';

Segment.initialize({androidWriteKey: "xxx", iosWriteKey: "xxx"});

const _FLUSH = false;
// Flush all user generated data to assigned currents
const _DEVELOPMENT = true;

const nativeClientVersion = "1.0.0";
// Version of game that will be synced, called by client!

let storage = new Storage({
	size: 1000,
	storageBackend: AsyncStorage,
	defaultExpires: null,
	enableCache: true,
	sync: {}
});

class API {
  constructor(){
		this.event = new EventEmitter();
		this.development = _DEVELOPMENT;
    this.version = nativeClientVersion;
		this.segment = Segment;
    console.log("API: Created instance");
    this.initRDS();
    // Ram Data Storage
		if(_FLUSH){
			this.flush();
		}
  }

	flush(){
		// Flush to the begining state
		this.setData("sample", "default");
		console.log("API: RDS variables are flushed");
	}

  initRDS(){
    this.getData("userId").then(uid => {
				this.segment.identify(uid);
        console.log("API: userId: ", uid);
    }, err => {
      if(err.name == "NotFoundError"){
				let uid = "Demo";
        this.setData("userId", uid);
				this.segment.identify(uid);
				console.log("API: First time userId set");
      }
    });

  }




  // These are like kinda private;
  // But fuck it, use them in the general app, who cares.
  setData(key, data){
    return storage.save({key, data});
  }

  getData(key){
    // returns promise
    return storage.load({key});
  }
}


let apiInstance = new API();

export default apiInstance;